package JDBC;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class Demo3 {
    public static void main(String[] args) throws Exception {
        /*
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection= DriverManager.getConnection(
                "jdbc:mysql://localhost:3307/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root");
        System.out.println("与数据库建立连接！");
         */

        Connection connection = DBUtil.getConnection();
        Statement statement = connection.createStatement();
        /*
            UPDATE user
            SET password='666666',nickname='老三',age=33
            WHERE id=1
         */
        String sql = "UPDATE user\n" +
                "SET password='666666',nickname='老三',age=33\n" +
                "WHERE id=1";
        System.out.println(sql);
        int num = statement.executeUpdate(sql);
        if(num>0){
            System.out.println("修改成功");
        }else{
            System.out.println("修改失败");
        }
        connection.close();


    }
}
